the402 endpoint detail

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headers.use.x402atlas.com

https://headers.use.x402atlas.com/

answers 402

Audit a URL's HTTP security headers over a single body-free (HEAD) request. Grades Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy, flags information-leak headers (Server, X-Powered-By), and returns the parsed values plus advisory warnings. Clean JSON for security and pentest automation.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0x7f8043c400799643bcb62B41B84b297a8Ecb7b9c
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
272 ms
Payment options
4 usable of 4
Last checked
2026-08-15T14:21:47.176Z (1h ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fheaders.use.x402atlas.com%2F"